DeWalt’s Extreme series Tri-Flute bits are impact rated with 1/4 hex shanks, making them suitable for use in impact drivers as well as all standard drills with a jawed chuck.- Impact rated: suitable for use with impact drivers- Quick-change 1/4 hex shanks suitable for use in a wide range of machines- Tri-flute tapered design for faster removal of wood chips with less binding- Three cutting spurs for cleaner, faster holes with extended drilling life- Full screw tip allows bit to self-feed for ease of use